Migrate Zoho CRM to Zoho Invoice (or upgrade)

Migrate Zoho CRM to Zoho Invoice (or upgrade)

I've been using CRM for a year, and now would like to use Books as well.

However, it looks like Zoho Books only migrates data from Zoho Invoice.
Can I upgrade my CRM to invoice in order to migrate my data to Books?

Orm how else can I get into Books from CRM?

Thx.